A&P II Urinary System flashcards _ Quizlet

A&P II Urinary System flashcards _ Quizlet - A P I I U...

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interlobular artery afferent arteriole glomerulus (capillary bed) Trace the blood back out of the kidney Efferent arteriole Peritubular capillaries Interlobular vein Arcurate veins Interlobar veins Renal vein Inferior vena cava What connective tissue surrounds the kidneys? Why? (Supports & holds kidney in place) 1.renal capsule 2.adipose (cushions, protects, stabilizes) 2.renal fascia (attaches kidney to the wall of the body) What is the hilium and what enters the kidneys there? bent in area of medial kidney; where verves, arteries, veins, and ureter enters/exits kidneys Describe the nerve supply of the kidneys. renal nerves: provide sympathetic innervation for the kidneys & ureters What does the sympathetic innervation of the renal nerve manage? 1. adjusts rates of urine formation (slows urine production down) 2.changes blood pressure & flow (changes direction of blood sends to areas where it is in need) 3. Stimulates renin release (renin helps to maintain proper blood volume) What types of cells line the nephron? location? Epithelial lined tubule microscopic; most are locate in cortex of kidney What are the two main parts of the nephron? 1.Renal Corpuscle (Boman's Capsule & Glomerulus) 2.Renal Tubule The renal tubules are composed of: 1. proximal convoluted tubule 2. Loop of Henle (thin segment :descending/thick segment: ascending) 3. Distal convoluted tubule 4. Collecting ducts What is the Goal of urine production? maintain homeostasis by regulating the volume and composition of what stays in the blood What 3 process are involved in urine formation? 1.Filtration (in renal corpusule by glomulurus) 2. Reabsorption (from the renal tubules by peritubules 3. Secretion (by renal tubules; "filtrate" things body doesn't need)
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What is the blood pressure at the glomulerus? 70 mm Hg; this is what pushes material from blood through the filtrations slits to Bowman's capsule into tubules. Describe glomulerar filtrate. Filters out of the blood: metabolic wastes, ions, glucose, free fatty acids, amino acids, vitamins What is the composition of blood dependent on?
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